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  #769  
Old 11-30-2013, 09:23 AM
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Originally Posted by Dan B View Post

Kazii - do you have skid plates installed on your SFU?

Can someone post some info like photo or illustration of this part and a diagram showing where it is located?
Skid plates were not an available option on the summit. I believe I have read that they can be installed aftermarket. I don't know where the DEF injector is, just going by the mechanic saying that a rock hitting it was a possible explanation. I also would like to see a diagram of where this is if anyone has access to this.
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  #770  
Old 11-30-2013, 10:18 AM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

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Originally Posted by fun2drive View Post
Sorry to hear this and hope Jeep gets a handle on this quick. I am expecting late JAN delivery and also some teething issues.
I wonder if the HVAC system is suffering air in the lines which is pretty common on some cars and trucks which renders the climate control system worthless until purged.
Hope they get you back on the road soon.
Does seem that the dealership is working hard to get you going...
Hadn't heard this before. Do you know if this a general problem or something common with the JGCs?

Their original thought was it either needing a software update or having a hardware problem with the control module. I told them that I installed the latest software version of uConnect. However, apparently there are all sorts of other software updates that only the dealer can install.
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  #771  
Old 11-30-2013, 11:26 AM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

Quote:
Originally Posted by kaziii View Post
Hadn't heard this before. Do you know if this a general problem or something common with the JGCs?

Their original thought was it either needing a software update or having a hardware problem with the control module. I told them that I installed the latest software version of uConnect. However, apparently there are all sorts of other software updates that only the dealer can install.
I'm not sure this is a problem. I have similar experience with the climate control system. I believe the reason for this is that it is a true closed loop system. If you set it to say 65F and the cabin temperature is much colder, the system will emit hot air until it senses ambient of 65F and will then reduce the emitted heat. If you now increase the set temperature by 1-2F heat will again be emitted for a few minutes. This is in contrast to open loop systems where there is no constant adjustment of the emmited heat by the system.
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  #772  
Old 11-30-2013, 12:06 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

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Originally Posted by netboy View Post
I'm not sure this is a problem. I have similar experience with the climate control system. I believe the reason for this is that it is a true closed loop system. If you set it to say 65F and the cabin temperature is much colder, the system will emit hot air until it senses ambient of 65F and will then reduce the emitted heat. If you now increase the set temperature by 1-2F heat will again be emitted for a few minutes. This is in contrast to open loop systems where there is no constant adjustment of the emmited heat by the system.
Once the engine is warmed up, with the outside temperature in the 40 and 50s and the inside climate control set at 82 or 84 (one notch below high) only cold air is blown. On high it will blow hot air to the point where you quickly get too hot. So on a trip you manually flip between High and cold (82 or 84) to make the cabin livable. Not how climate control is supposed to function.

Somewhere in an earlier post I read that there is a supplemental heating system to compensate for the fact that diesels do not generate much heat. I am thinking that the supplemental heating system is the only one working for me. It kicks on when the engine is first started and cold. Once the engine is warm it only works when the climate control is set to high.
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  #773  
Old 11-30-2013, 12:07 PM
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Red face Jeep's acceptable gap - flush dimensionals & tolerances

Dealer's Service Manager is saying that the distance the rear driver's door extends beyond the body, about 3/16", falls within Jeep/Chrysler's dimensional limit specs for gaps/flush fits. Says the same for the Liftgate which extends beyond the body about 3X further on the driver's side, 0.108", than on the passenger side, 0.040". Ditto for the variance in the gaps between the body taillamp and lift gate taillamp assemblies, 0.187" on driver's side vs 0.110" on passenger side.

Attached is a copy of the dimensional specification that I was given. I'll post a follow up after I've had a chance to compare my measurements with the specs and talk to my dealership's sales and service managers.
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  #774  
Old 11-30-2013, 04:57 PM
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Question Off road banging

I have a little over 1,000 miles on my GC Overland and decided to try a little offroading. I drove it to a moderately bad (rocky, sandy) dirt road near my house and raised it to the off road 1 position. I drove the road pretty slowly (15-25 mph) and I was very surprised by the amount of banging noise coming from the suspension. I tried various combinations (sand, rock, off road 1 & 2) and nothing seemed to make it much better. Is this normal? I've had a couple of other SUVs (an old Isuzu Trooper and a Mercedes ML320) and neither of them made this much noise on dirt roads. The ride isn't bad, although it doesn't "float" over the bumps the way I thought it might, but the noise is surprising.
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  #775  
Old 11-30-2013, 07:19 PM
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Quote:
Originally Posted by kaziii View Post
Once the engine is warmed up, with the outside temperature in the 40 and 50s and the inside climate control set at 82 or 84 (one notch below high) only cold air is blown. On high it will blow hot air to the point where you quickly get too hot. So on a trip you manually flip between High and cold (82 or 84) to make the cabin livable. Not how climate control is supposed to function. Somewhere in an earlier post I read that there is a supplemental heating system to compensate for the fact that diesels do not generate much heat. I am thinking that the supplemental heating system is the only one working for me. It kicks on when the engine is first started and cold. Once the engine is warm it only works when the climate control is set to high.
This isn't a diesel-only issue with the climate control. Mine does the same thing on my hemi Overland. Basically it's like this:

Heated air will ALWAYS come out when it's set to "HI"

Heated air will come out on any other warm temperature setting (like 78, 80, etc) for a while. Then, it'll go cold. Not adjust to a slightly less warm temperature, but the air goes cold.

Now, interestingly, if you put up with it being cold for a bit, it WILL go warmer again after that while. But then cycle back to cold.

It seems to be either an interior temperature sensor issue or a programming issue (system reacts too aggressively to reaching the desired temp, overshoots, then tries to cool it too aggressively).
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  #776  
Old 11-30-2013, 09:34 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

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Originally Posted by mackatak View Post
It's a white 2" x 2.5" sticker with two barcodes, one at the top and one on the bottom. Beneath the top barcode is some alphanumeric id and below that are two 4 digit numbers. Not sure which one is the PIN or maybe both are, anyway the sales women told me those numbers were what I needed if I ever had to get a new fob. The sticker is affixed to a ziplock bag labeled "KEEP IN VEHICLE FOR CUSTOMER USE". For obvious reasons I didn't want to post a picture of mine. Hope that helps.
Received an email from the dealer. They tossed the ziplock bag out. What he claims is that the PIN is not needed as every key-fob needs to be programmed at the dealer shop and once you hookup the Jeep to the dealer scanner tool, you don't need PINs. From some research I did on the net this sounds like hogwash. It looks like the module that holds the key-fob programming is locked with a PIN, so even with the dealer scanner tool, you still need a PIN to unlock that security zone. I'm going to call Customer Care on Monday and find out Chrysler's stance on it. From what I read on the net, a copy of the PIN is available also on the original dealer invoice, and with the Chrysler regional manager. A more sinister theory I think of is that by not giving me the PIN, only that dealership can program a keyfob (they have the PIN on the invoice) which gives them a service advantage. I wonder what "KEEP IN VEHICLE FOR CUSTOMER USE" is not clear?
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  #777  
Old 11-30-2013, 11:21 PM
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First time for towing something - what a handsome couple. Good thing I've got 7400 lbs towing:-) I did have to remove the ball on my offset hitch and turn the hitch upside down and reinstall the ball to lower it a few inches. The hitch on the GC is definitely higher than my old Murano.
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  #778  
Old 12-01-2013, 07:47 AM
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Quote:
Originally Posted by Peter_K View Post

This isn't a diesel-only issue with the climate control. Mine does the same thing on my hemi Overland. Basically it's like this:

Heated air will ALWAYS come out when it's set to "HI"

Heated air will come out on any other warm temperature setting (like 78, 80, etc) for a while. Then, it'll go cold. Not adjust to a slightly less warm temperature, but the air goes cold.

Now, interestingly, if you put up with it being cold for a bit, it WILL go warmer again after that while. But then cycle back to cold.

It seems to be either an interior temperature sensor issue or a programming issue (system reacts too aggressively to reaching the desired temp, overshoots, then tries to cool it too aggressively).
You described it exactly! Did you have it fixed or are you just living with it as I was before my other problem? Actually, it took the long trip to figure out that there really was a problem. On short trips it really does heat up initially while the engine is warming and I wasn't sure there was a problem. On the long trip my wife was somewhat understanding when she pointed out that the heater was set in the 80s and she still had cold air blowing on her.
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  #779  
Old 12-01-2013, 09:15 AM
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Quote:
Originally Posted by kaziii View Post
You described it exactly! Did you have it fixed or are you just living with it as I was before my other problem? Actually, it took the long trip to figure out that there really was a problem. On short trips it really does heat up initially while the engine is warming and I wasn't sure there was a problem. On the long trip my wife was somewhat understanding when she pointed out that the heater was set in the 80s and she still had cold air blowing on her.
No fix...and in fact I was waiting to determine if others have the same issue (which now it seems they do). The question I have now is whether or not it's something that afflicts all of these vehicles (programming issue) or some (bad sensor batch or similar)...
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Old 12-01-2013, 10:20 AM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

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Originally Posted by Vtail View Post
First time for towing something - what a handsome couple. Good thing I've got 7400 lbs towing:-) I did have to remove the ball on my offset hitch and turn the hitch upside down and reinstall the ball to lower it a few inches. The hitch on the GC is definitely higher than my old Murano.
How fast do you have to go until it takes off like a kite behind the jeep?
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